“positive drive lift”的概念、定义、翻译、参考文献-科学参考

单词	positive drive lift
释义	positive drive lift Encyclopedia 工学电梯释 positive drive lift强制驱动电梯用链或钢丝绳悬吊的非摩擦方式驱动的电梯。这类电梯属于早期的电梯类型，已很少应用，仅在杂物电梯等中使用。不能使用对重，可使用平衡重。
随便看	origin of civilization origin of coal origin of coordinates origin of dry-land agriculture origin of early hominins origin of elements origin of game Origin of life origin of longitude origin of modern human origin of modern humans origin of news origin of oil and gas origin of play origin of rapeseed origin of replication origin of rice agriculture origin of species origin of state origin of the earth's magnetic field origin of the edge Origin of the Moon origin of the universe origin of Traditional Chinese Medicine origin of vascular plants

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